—What'sthedatetoday? —It's.[ ] A. Junefi 发布时间:2017-04-14 16:59 │ 来源:www.tikuol.com 题型:选择题 问题: —What's the date today? —It's . [ ]A. June fifteen B. June fifteenth C. the fifteenth June
题型:选择题 天然雨水和酸雨的pH都______7(选填:=、<、>).酸雨的腐蚀作用主要来自______的酸性.从环保的角度,如何减少酸雨的危害提出两条建议:①______;②______. 查看答案